关于这张图
Over the course of just one day a tiny active region grew to became almost as large as its many-days-old neighbor (Aug. 23-24, 2018). Active regions, which are areas of intense magnetism, appear brighter in wavelengths of extreme ultraviolet light and are often the source of solar storms. Movies are available at https://photojournal.jpl.nasa.gov/catalog/PIA22680
